UNSPSC 81151804: Hydrological surveys

UNSPSC 81151804 Hydrological surveys (Commodity) spans water assessment, modeling, and permitting work that state and local governments buy to manage stormwater systems, flood risk, groundwater resources, and watershed planning. Recent solicitations show state and local bodies procuring hydrologic and hydraulic modeling, flood-forecasting systems, groundwater characterization, well testing and design, water quality monitoring, permitting support, and watershed master planning. The issuing bodies are primarily Florida water utilities (Tampa Bay Water, a regional water supply authority), Florida cities and counties (City of Casselberry, City of Tallahassee, Hillsborough County, City of DeBary, Pinellas Suncoast Fire & Rescue District), Texas counties (Williamson County), and higher-education institutions (University of Texas at Austin). Tampa Bay Water appears as a repeat buyer, issuing separate RFPs for as-needed hydrogeological services, as-needed ecological services, and land management services within the past six months. Water utilities, municipalities, and counties are the dominant issuing bodies under this code.

Recent activity concentrates in Florida, particularly the Tampa Bay region and central Florida, with secondary activity in Texas. Representative opportunities include Tampa Bay Water's RFP for as-needed hydrogeological services (due June 30, 2026) seeking five qualified firms for groundwater modeling, well design and testing, water quality monitoring, and permitting assistance on a task-order basis with five-year contracts commencing October 1, 2026; Hillsborough County's RFP for a countywide flood forecasting system (due September 11, 2026, estimated value $850,000 over four years) requiring automated compound-flood modeling, GIS mapping, and cloud-based implementation within 12 months; the City of Tallahassee's SOQ for professional engineering services to develop a comprehensive Watershed Master Plan under FEMA HMGP (due October 2, 2026) encompassing GIS analysis, hydrologic and hydraulic modeling, and flood-mitigation strategy development; and Williamson County's RFSQ for engineering development services (due August 18, 2026) including third-party review of floodplain permits and complex hydraulic and hydrologic modeling using HEC-HMS and HEC-RAS software. Firms pursuing this code should expect task-order contracting, professional-licensing requirements (Florida PE or Texas PE depending on jurisdiction), and evaluation criteria emphasizing technical expertise, past project experience, and staff qualifications over price.